Tree-Ring dates from ... Arizona: C, D, E, H, I, J, K, N, O, P, Q, U, V, W; Colorado: V, W; New Mexico: A, B, C, D, G, H, I, J, K, L, M, N, O, P, S, U, V, Z; Utah: S, T, U, V, W

Tucson-AZ.